My Clients Kept Booking the Wrong Time. The Fix Took Three Minutes.

I have lost count of the Zoom calls I have sat on alone.

The first time it happened, I assumed the client had forgotten. The second time, I checked the calendar invite and realised they had not forgotten at all. They were just an hour out.

They had booked the meeting from their end, in their time zone, and the conversion got muddled somewhere between their calendar and mine. By the time we worked it out, the call was half over and one of us was apologising.

If you work across time zones, this is going to happen to you. Probably more than once.

The maths gets you, every time

The problem is not laziness. The people I work with are sharp. They know what UTC is. They can find Sydney on a map.

But scheduling a meeting between London, New York, and Singapore is a small puzzle. Take the meeting time. Subtract daylight saving from one country. Add it back to another. Remember that Australia and the UK are on opposite DST cycles for half the year. Now type the result into a calendar that might helpfully convert it for you, or might not.

People mess this up. So do I. It is the kind of mistake that does not feel like a mistake until the meeting is already gone.

Daylight saving is the silent killer

DST is what catches almost everyone out.

London moves to BST on the last Sunday of March. It drops back to GMT on the last Sunday of October. The US shifts earlier and later than the UK. Mainland Europe shifts on the same weekend as the UK but stays an hour ahead. Australia does the whole thing in reverse because it sits in the southern hemisphere.

Half the world does not bother with DST at all. India, Japan, most of Africa, most of the Middle East, all of southern Asia. No changes, ever.

So you cannot eyeball it. You have to actually look. And if your calendar is doing its own conversion in the background based on outdated rules, you are quietly being lied to.

This is how I ended up alone on Zoom for the third time in six weeks. I gave up trying to do the maths in my head.

What actually fixed it

I moved to a live world clock as my source of truth. Not the clock on my phone, not the calendar conversion, not my memory of the offset. One page, pinned in my browser, with the cities I care about all showing live time at once. I use Easy World Clock for this. It is free, it loads instantly, and it handles DST without me having to think about it.

I have my three or four most common cities saved in the city clocks view, and I check it before I send any cross-zone invitation.

That sounds obvious. It probably is obvious. But the number of people I know who still rely on a back-of-envelope calculation is high.

The two things I do before every international meeting

I have ended up with a small habit that takes about three minutes.

First, I open the international meeting planner, drop in the cities, and find the overlap where everyone is still in normal working hours. For London and Sydney, that overlap is brutal. For London and New York, it is generous. The planner shows it on a grid, so I do not have to guess.

Second, I put the time in the invitation in three formats. The local time for me, the local time for them, and UTC. Something like: “Wednesday, 10am London / 5am New York / 9pm Sydney.”

That sounds like overkill. It is not. It is the difference between everyone showing up at the right time and me sitting in an empty Zoom room, again.

Why a live clock beats your phone

You do not need fancy software for any of this.

You need a live clock that handles DST automatically, a way to compare a few cities side by side, and a habit of stating the time zone in writing every single time. That is the whole system.

The reason a live world clock works better than a phone clock or a calendar conversion is that it shows you everything at once. You see London, you see New York, you see Sydney. If one of them is in the middle of the night, you notice immediately. If DST has just changed, the number on the page updates the same minute it does in real life.

The phone clock cannot do that. It only shows you one time, in one place.

The fix really is that small

I do not know if I will ever stop missing the occasional meeting. Calendars are weird. People click “tentative” and forget. Someone always has a power cut.

But the time zone problem is solved. I have not booked a meeting at the wrong hour for a client in eighteen months. The fix really is that small.

If you want to skip the trial-and-error part, Easy World Clock is where I do all of this. Type in any city and you get the live time. The meeting planner handles the cross-zone scheduling. The city clocks view is the thing I leave open in a pinned tab.

The next time someone says “let’s catch up next week,” check it before you reply. Three minutes. No more Zoom rooms with one occupant.